diff --git a/native_mate/constructor.cc b/native_mate/constructor.cc
index fca7921277..2ab6459e8d 100644
--- a/native_mate/constructor.cc
+++ b/native_mate/constructor.cc
@@ -2,7 +2,7 @@
 // Use of this source code is governed by a BSD-style license that can be
 // found in the LICENSE.chromium file.
 
-#include "native_mate/wrappable_class.h"
+#include "native_mate/constructor.h"
 
 #include "native_mate/function_template.h"
 #include "native_mate/object_template_builder.h"
diff --git a/native_mate/function_template.cc b/native_mate/function_template.cc
index 711c04150a..22bb6260d1 100644
--- a/native_mate/function_template.cc
+++ b/native_mate/function_template.cc
@@ -9,7 +9,7 @@ namespace mate {
 namespace internal {
 
 CallbackHolderBase::CallbackHolderBase(v8::Isolate* isolate)
-    : MATE_PERSISTENT_INIT(isolate, v8_ref_, v8::External::New(isolate)) {
+    : MATE_PERSISTENT_INIT(isolate, v8_ref_, v8::External::New(this)) {
   MATE_PERSISTENT_SET_WEAK(v8_ref_, this, &CallbackHolderBase::WeakCallback);
 }